Google Play is a little behind Apple's App Store, which hit 25 billion downloads back in March. For that milestone, the company ran a promotion to give the person who downloaded the 25 billionth app a $10,000 iTunes gift card. The contest was won by a man in China, who downloaded physics-based puzzle game "Where's My Water?"

"Twenty-five billion is more than twice the distance, in miles, that the Voyager 1 spacecraft has travelled since its launch 35 years ago. It’s the amount of time, in minutes, that have passed since some of our earliest ancestors began to set foot in Europe. And now, thanks to all of you, it’s a Google Play milestone. We look forward to the next 25 billion," said Google Director of Digital Content Jamie Rosenberg.

Google Play hitting a milestone is great and all, but what's in it for you? Apparently, discounted stuff for the next five days. Google says that various apps from the likes of EA and Rovio will be $0.25, and that they will run special collections like "25 banned books" and "25 movies you must own" on the cheap. Those deals should be hitting Google Play later today.